Heating apparatus for incubators.



N0. 778,3o4. l l PATBNTBD DBG;27,1904

f I G. K. GAVINBSS & c. J. YARRINGTONl HEATING APPARATUS POR INGUBATORS.

APPLIOATION FILED JAN. 3.1904.

` J'" .14 v I l# 13, s- /f une' i A ull a 7l UNITED ,STATES Patented December 27, 1904. i

PATENT OEEICE.

GEORGE KIRBY CAVINESS AND CHARLES J OSIAH YARRINGTON, OF PRINCETON, MISSOURI.

HEATING APPARATus'f-on INCUBATORS.

SPECIFICATION forming part of Letters Patent No; 778,304, dated December 2'7, 1904.

. Application ned January 8,1904. serial No. 188,218." Y

1'0 all whom, t may concern/ Be it known that we, GEORGE KIEBY CAVI- NEss and CHARLEs JosIAH YARRINGTON, citizens of the United States, residing at Princeton, in the county of Mercer and State of Missouri, have inventeda new and useful Heating Apparatus for Incubators, of which the following is a specification.

Our present invention relates to a novel incubator, and more particularly to the heating apparatus thereof.

The object of the invention is to provide the incubator with heating apparatus which will insure an even temperature uniformly throughout the extent of the incubating-cham-V ber, the control of the apparatus to suit varying conditions being effected automatically and withoutthe necessity for the attendance of anoperator.

' A further object of the invention is to insure the proper diifusion and circulation of the air under the egg-tray and to so organize the elements of the heating device that the latter may be easily installed for use or detached from the incubator and disorganizedk for purposes of repair or cleaning.

Subordinate to these objects are others, which will more fully appear during the succeeding description of the illustrated construction.

In the accompanying drawings, Figure 1 is a side elevation of an incubator equipped'with our heating apparatus and having its legs broken away. Fig. 2 is a sectional elevation of the heating apparatus detached, and Fig. 3 is a plan view of the subject-matter of Eig. 2.

Like numerals of reference are employed to designate corresponding parts in the several views. l v

1 indicates an incubator of the lusual construction, above the bottom of which is supported an egg-tray 2, access to which is obtained by means of a hinged doorB, provided with glass panels through which eggs may be provided adjacent to one end of its top wall with outlet or vent tubes 5. These vents are provided for the escape of hot air after the latter has traversed substantially the entire length of thel hot-air vchamber 4 from the open inner ends of a pair of parallel heating-tubes 6 and 7, extended into the tank 4: from one end thereof and having divergent outer ends 8 and 9, communicating with a lamp chimney or Y flue 10, extending upwardly from alamp 1l, supported beyond one end of the incubator in any suitable manner-as, for instance, by a lamp-bracket 12.

The products of combustion from the lamp 11 are designedv to pass from the chimney or iiue 10 to the heating-tubes 6 and 7,'from which these heated products escape. at the end of the tank ifarthest from the heater and after traversing the pan to the opposite end thereof escape from the vents 5. This circulation of hot vapor efectually heats the wallsV of the tank 4:, and assaid tank extends entirely over the incubating-chamber the latter is uniformly heated from above.

The regulation of the described circulation of hot air is effected by means of an automatic regulating apparatus of any desired type. In the illustrated embodiment of the invention, however, the upper end of the flue or chimney 10 is provided with acap 13, carried at one end of a regulating-lever 14, controlled by a thermostat 15, disposed within .the incubating-chamber to maintain the latter at a fixed temperature by the automatic adjustment of the cap 13 in amanner well understood in the art.

In addition to the described arrangement for heating thel incubating-chamber from above it is desirable to provide for more or less circulation of air in the immediate neighborhood of the eggs. the major portion of the iiue or chimney 10 with a heating-drum 16, preferably constructed as shown and havinga flat side 17 imposed against one end of the incubator and provided with iianges 18 to facilitate the bolting or screwing of the drum to the incubator-frame.

The drum 16 also incloses at its upper end thev converging ends 8 and 9 of the heating-tubes To attain this end, we surround 6 and 7, and through the bottom of the drum is extended the vertical branch of an angular diffusion-pipe 19, the horizontal branch of which is located below the bottom of the drum and is extended into the egg-chamber of the incubator-that is to say,the horizontal branch of the difusion-pipe 19 is extended into the incubator, below the egg-tray 2 therein, for the purpose of inducing a circulation of air in the neighborhood of the eggs, it being understood that the incubator is provided with suitable ventilators 20, as usual. The side wall of the drum 16 is provided with one or more openings 21, as shown.

From the foregoing it will be noted that the entire heating apparatus shown in Fig. 2 may be quickly applied to an incubator of any usual type and that when so applied the incubating-chamber will be automatically maintained at a uniform temperature and that a gentle circulation of air will be constantly maintained below the egg-tray and around the eggs supported thereby. It is to be distinctly understood, however, that while the illustrated embodiment of the invention is thought at this time to be preferable we reserve the right to effect such changes, modifications, and

variations of the illustrated structure as may.

fall fairly within the scope of the protection prayed.

What we claim isM 1. The combination with an incubator-casing, of a hot-air tank located in the top thereof, a heater located beyond one end of the casing, a flue disposed over the heater, heatingtubes communicating with the flue, said tubes entering the heating-tank adjacent to the heater and having open ends adjacent to the opposite end of the tank, and vent-openings in the top wall of the tank at the end thereof adjacent to the heater.

2. The combination with an incubator-casing, of a shallow hot-air tank removably supported at the top of the casing and extending entirely over the incubating-chamber, ventopenings at one end of said tank, a pair` of parallel heating-tubes located in the tank and opening adjacent to the end thereof farthest from the vent-openings, a vertically-disposed flue located beyond one end of the casing and communicating with converging ends of the heating-tubes, a lamp supported below the flue, and means for automatically regulating the iow of hot air to the heating-tubes.

3. The combination with an incubator-easing, of a shallow hot-air tank located in the top thereof, a lamp supported beyond one end of the casing, a flue disposed over the lamp, heating-tubes communicating with the iue and extended through the hot-air tank to a point adjacent to the end thereof farthest from the flue, vent-openings at the end of the, tank nearest the fine, a heating-drum surrounding the flue, and an angular diffusion-pipe having one end extended into the drum and the other end passed into the ineulmtor-casing adjacent to the bottom thereof.

4. The combination with an incubator-casing', and an egg-tray supported therein, of a drum secured to one end of said casing, an angular diffusion -pipe having its vertical branch extended into the drum and its hori- Zontal branch extended into the incubatorcasing at a point below the egg-tray, a lamp supported below the drum, a liuc extending through the drum from the lamp, a cap closing the upper end of the fine. automatic means for moving the cap to regulate thel flow of hot air through the line, a shallow hot-air tank fitted in the top of the inculmtor-casing, pal'- allel heating-tubes disposed longitudinally of the tank and opening at the end thereof farthest from the heater, said heating-tulws having end portions converging to and in communication with the liuc at points :uljacent lo the top of the drum, and vent-tubes extending from the top wall of the hot-air tank adjacent to the end thereof nearest the heater. 5. The combination with an incubator-easing, of a lamp supported beyond one end thereof, a fine disposed above the lamp,a drum surrounding the iiue, heating-tubes extend ing across the top of 4the incubator-casing from the flue, and a diffusion-pipe extendingfrom the interior of the drum and communicating with the interior of the incubator-easing adjacentto the bottom thereof.

6. The combination with an incubator-easing, of a lamp supported beyond one end thereof, a fine disposed above the lamp to eenvey the products of combustion therefrom, a drum surrounding the fine, a heating-tank within the casing at the top thereof, heatingtubes extended into the tank from the ilue to direct the products of combustion to the interior of the tank, a diffusion-pipe establishing communication between the bottom of the casing and the interior of the drum, and a thermostatic device for regulating the flow of the products of combustion through the heating-tubes In testimony that we claim the foregoing as our own we have hereto aiiixed our signatures in the presence of two witnesses.

GEORGE KlllBY JAVlNllSS. CHARLES JOSlAll YAltltlNGldN.

Witnesses:

SoHUYLnR KING, A. F. ErrnRsoN. 

